linux-kernel - [PATCH 3.4 158/177] nfs: Fix use of uninitialized variable in nfs

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Message-Id: <1422418236-12852-249-git-send-email-lizf@kernel.org>
Date:	Wed, 28 Jan 2015 12:10:16 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Jan Kara <jack@...e.cz>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 158/177] nfs: Fix use of uninitialized variable in nfs_getattr()

From: Jan Kara <jack@...e.cz>

3.4.106-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 16caf5b6101d03335b386e77e9e14136f989be87 upstream.

Variable 'err' needn't be initialized when nfs_getattr() uses it to
check whether it should call generic_fillattr() or not. That can result
in spurious error returns. Initialize 'err' properly.

Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Trond Myklebust <trond.myklebust@...marydata.com>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 fs/nfs/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 9bb4e5c..a6d5905 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -512,7 +512,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
 	struct inode *inode = dentry->d_inode;
 	int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
-	int err;
+	int err = 0;
 
 	/* Flush out writes to the server in order to update c/mtime.  */
 	if (S_ISREG(inode->i_mode)) {
-- 
1.9.1

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